//封装分类数据业务相关代码
import { ref, onMounted } from "vue"
import { getCategoryAPI } from "@/apis/category"
import { onBeforeRouteUpdate } from "vue-router"
import { useRoute } from "vue-router"




export function useCategory() {
  const categoryData = ref({})
  const route = useRoute()

  const getCategory = async (id = route.params.id) => {
    const res = await getCategoryAPI(id)
    categoryData.value = res.result
  }

  onMounted(() => getCategory())

  //目标:路由参数变化的时候 可以把分类数据接口重新发送
  onBeforeRouteUpdate((to) => {
    //存在问题:使用最新的路由参数请求最新的分类数据
    getCategory(to.params.id)
  })
  return {
    categoryData
  }
}
